title: [A clinical study of doxycycline slow-release gel on periodontitis chemotherapy].
mesh_terms: D000328:Adult; D000368:Aged; D003692:Delayed-Action Preparations; D004318:Doxycycline / Q000008:administration & dosage*; D005260:Female; D005782:Gels; D006801:Humans; D008297:Male; D008875:Middle Aged; D010518:Periodontitis / Q000188:drug therapy*
chemical_list: D003692:Delayed-Action Preparations; D005782:Gels; D004318:Doxycycline